Taxon - Odkazy a literatura
IUCN Red List of Threatened Species 2024-1 [21126]
IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [jako Subulina usambarica K. Pfeiffer]
Datum citace: 29. leden 2024
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [jako Subulina usambarica Pfeiffer]Datum citace: 22. listopad 2013